*{
  padding: 0;
  margin: 0;
}
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

code {
  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New', monospace;
}
ul{
  list-style: none;
}
.layout{
  display: flex;
}
.layout .left{
  flex: none;
  position: sticky;
  top: 0;
  width: 200px;
  height: 100vh;
  background-color: rgb(18, 52, 86);
  font-size: 14px;
  overflow: hidden;
  transition: width .3s;
}
.layout .left .scrollbar{
  line-height: 50px;
  height: 100%;
  margin-right: -17px;
  overflow-x: hidden;
  overflow-y: scroll;
  box-sizing: border-box;
}
.layout .left a{
  text-decoration: none;
  white-space: nowrap;
}
.layout .left .link{
  cursor: pointer;
}
.layout .left a, .layout .left .link{
  display: flex;
  align-items: center;
  color: white;
  transition: all .3s;
}
.layout .left a:hover, .layout .left .link:hover{
  color: rgb(64, 158, 255) !important;
  background-color: rgb(14, 42, 69);
}
.layout .left a img.arrow, .layout .left .link img.arrow{
  display: block;
  width: 12px;
  height: 12px;
  transform: rotate(0);
  transition: transform .3s;
  margin-left: auto;
}
.layout .left a .icon{
  display: block;
  width: 18px;
  height: 18px;
  margin-right: 15px;
  fill: currentColor;
  flex: none;
}
.layout .right{
  flex: 1;
}
.layout .right .nav{
  position: sticky;
  top: 0;
  z-index: 999;
  height: 50px;
  line-height: 49px;
  background-color: white;
  border-bottom: 1px solid #e8e8e8;
  box-sizing: border-box;
}
.layout .right .nav a{
  text-decoration: none;
  color: rgb(64, 158, 255);
}
.layout .right .nav a:hover{
  color: blue;
}
.layout .right .nav span.cut{
  display: inline-block;
  padding: 0 5px;
}
.layout .right .main{
  /* transform: translateX(3%);
  opacity: 0;
  transition: all .6s; */
}
.slider{
  overflow: hidden;
  transition: height .3s;
  background-color: #1f2d3d;
}
.hurray{
  color: rgb(64, 158, 255) !important;
  background-color: rgb(14, 42, 69);
}
input::-webkit-input-placeholder{
  color: #999;
}
input::-moz-placeholder{
  color: #999;
}
input:-ms-input-placeholder{
  color: #999;
}
input::-webkit-input-placeholder{
  color: #999;
}
input::placeholder{
  color: #999;
}